Lamp base



FIG. 1 is a front elevational view of a lamp base showing my new design, the lamp socket and harp being shown in broken lines for illustrative purposes only.

FIG. 2 is a bottom plan view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a top plan view thereof.

FIG. 5 is a right side elevational view thereof, the left side being a mirror image.

FIG. 6 is a front elevational view of a second embodiment of my design.

FIG. 7 is a rear elevational view thereof.

FIG. 8 is a right side elevational view thereof, the left side being a mirror image.

FIG. 9 is a top plan view thereof.

FIG. 10 is a bottom plan view thereof.

FIG. 11 is a front elevational view of a third embodiment of my design.

FIG. 12 is a top plan view thereof.

FIG. 13 is a right side elevational view thereof, the left side being a mirror image.

FIG. 14 is a bottom plan view thereof.

FIG. 15 is a rear elevational view thereof.

FIG. 16 is a cross-sectional view thereof as taken along line XVI--XVI of FIG. 11. 

The ornamental design for a lamp base, as shown and described. 